Marriott Rewards has similar offer going on with both American Airlines and Delta. This is a worthwhile offer if you have completed the current MegaBonus offer and collect US Airways miles.

Here are the terms and conditions of this offer:

Offer valid November 10, 2014 through January 31, 2015. Reservation must be made by December 31, 2014. Enrollment and registration with Marriott Rewards® is required to be eligible for this promotion. US Airways Dividend Miles® members must be members of Marriott Rewards® and indicate US Airways as their earning preference in order to qualify for this offer. A maximum of 1,000 bonus miles can be earned per stay and a maximum of 5,000 bonus miles can be earned with this promotion. Miles earned on all qualifying charges at participating JW Marriott®, Autograph Collection® Hotels, Renaissance® Hotels, Marriott Hotels®, or Gaylord Hotels®. Members electing to earn Marriott Rewards points are not eligible for this promotion. Please allow six to eight weeks after promotion ends for bonus miles to be posted to your US Airways Dividend Miles account. A stay is defined as consecutive nights spent in the same hotel, regardless of check-in/check-out activity. Your preferred airline/miles program reserves the right to change program rules, regulations, travel awards and special offers at any time without notice. Any such changes may affect your ability to use the awards or mileage credits that you have accumulated. All program terms and conditions of your preferred airline/miles program apply. All Marriott Rewards terms and conditions apply. See MarriottRewards.com for complete Marriott Rewards terms and conditions. Contact us at http://www.marriott.com/rewards/customer-support.mi for more information.